Chemistry of inorganic compounds – Nitrogen or compound thereof – Ammonia or ammonium hydroxide
Patent
1995-04-11
1996-03-12
Langel, Wayne
Chemistry of inorganic compounds
Nitrogen or compound thereof
Ammonia or ammonium hydroxide
564463, C01C 100, C07C21100
Patent
active
054984017
ABSTRACT:
A method for converting hydrazine and/or substituted hydrazines, particularly unsymmetric dimethyl hydrazine (UDMH), to ammonia or ammonia and the corresponding amines by hydrogenation over a supported Group VIII metal catalyst. Preferably, the hydrazines are dissolved in a suitable solvent and then hydrogenated at a temperature of about 0.degree. to 250.degree. C., followed by separation of the commercially valuable ammonia and amines. Alternatively, a gas phase reaction may be used.
REFERENCES:
patent: 4122671 (1978-10-01), Armstrong
patent: 4661179 (1987-04-01), Hunter et al.
Rylinder, P. N., (Catalytic Hydrogenation over Platinum Metals Academic Press (1967).
Lunn G. et al. Reductive Destruction of Hydrazine as an Approach to Hazard Control Environ. Sc. Technol. 17, No. 4 (1983).
Database WPO Week 7425, Derwent Publications, London AN 74-45881V & JP, A. 48 099 092 (Tech. Res. & Dev.) Dec. 1973 Abstract.
DeFeo Brent S.
Johnson Russell W.
Koch Mark B.
Lupton Francis S.
Allied-Signal Inc.
Criss Roger H.
Langel Wayne
Wells Harold N.
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